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Finding the Fourth Proportional to 8,938.40, 13,347.41 and 7,298.15

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Solution

The fourth proportional to 8,938.40, 13,347.41 and 7,298.15 is: 10,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.40 : 13,347.41 = 7,298.15 : x
  2. Step 2: Convert to fraction form
    8,938.40/13,347.41 = 7,298.15/x
  3. Step 3: Cross multiply
    8,938.40x = 13,347.41 × 7,298.15
  4. Step 4: Simplify right side
    8,938.40x = 97,411,297.06
  5. Step 5: Solve for x
    x = 97,411,297.06/8,938.40
  6. Step 6: Final answer
    x = 10,898.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.